Neutrophil adhesion and chemotaxis in LAD-1/variant syndrome. (A) Neutrophil adhesion to fibronectin upon activation by various stimuli (n = 7 patients). Neutrophils were isolated from blood of (local) healthy individuals shipped in the same manner and are included as controls. (B) Neutrophil chemotaxis to various chemotactic factors. Data of 7 patients have been combined. Controls as in panel A. Data represents mean ± SD.